As far as we're concerned, Cameron Diaz — with her pillar-long legs, flat-as-a-pancake abs and toned little bum — is the unofficial queen of the bathing suit and the miniskirt. We couldn't take a sample from her gene pool, but we scored the next best thing: tips from her personal trainer, Teddy Bass, who has also worked with other Hollywood hotties, like Lucy Liu and Christina Applegate. Here are Bass' best moves — which you can do anywhere — for Diaz-worthy abs and glutes (buttocks muscles). He suggests doing this workout on three nonconsecutive days each week (if you're super fit, though, you can do the abdominal exercises daily). To get the fastest results, also try to do a variety of aerobic activities a few times per week — varying your cardio routine, says Bass, is the best way to burn fat: "Doing cardio two to five days per week for 30 to 50 minutes each time on different machines, like the treadmill one day and the elliptical another — or getting outside for a hike or bike ride — constantly challenges the body so it doesn't plateau."

MOVE: Alternating Side Plank

Works shoulders, obliques, core
DO IT: Start in a plank position: Place forearms firmly on the ground so they're parallel with each other and elbows directly under the shoulders. Keep your legs extended straight behind you with your toes tucked under so you're pressing into the balls of your feet. Tighten the abs so shoulders and hips are in a straight line and your body is several inches off the floor. Next, turn your entire body to face the wall to your right, balancing on the outside of the left foot with the right foot stacked on top of the left one. Keep your hips lifted, and place the fingertips of your right hand on the ground about a foot in front of your torso to help you balance. Stay here for one count. Return to the starting position for one count. Repeat on the opposite side, then return to the middle. Do two to three sets of 15 repetitions on each side.

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MOVE: Straight-Leg Scissors

Works obliques, core, inner thighs
DO IT: Lie on your back with your fingers interlaced and supporting the back of your head. Lift your shoulders, arms and head a couple of inches off the floor (this keeps the abs engaged throughout the exercise). Lift your legs straight up in the air so they're perpendicular to the torso (if your hamstrings are tight, bend the knees slightly or lower the legs closer to the floor). Now, bring your right elbow to your left knee, without moving your legs. Come back to center and repeat on the opposite side, reaching your left elbow to your right knee. Do three sets of 25 repetitions on each side, resting for one minute between sets.

MOVE: Single-Leg Teaser

Works core, glutes, inner and outer thighs
DO IT: Lie on your back with your knees bent and feet flat on the floor, about eight inches from your butt. Hold a one-liter water bottle or a kickball with both hands directly above your chest, with your arms straight. Next, lift and straighten the right leg so it's at a 45-degree angle with the ground. At the same time, slowly roll the torso up off the ground one vertebrae at a time, keeping your arms straight out in front of you — take at least four seconds to do this — until the torso is upright. Pause for a second at the top and then take another four seconds to lower the torso and leg back to the ground. Repeat 10 times on this side, take a short rest, and then do 10 reps on the left side. Repeat for two or three sets.